DRINKING WATER

GettyImages-157742535 molecule pfas Custom Tank Designs That Actively Manage PFAS Mass Transfer Zone (MTZ) — And Why It Matters More Than Ever

As utilities prepare for the pending 4-ppt PFAS drinking water MCL, many are discovering that legacy lead/lag designs—workhorses for decades when treating contaminants in the ppm and ppb range—simply are not optimized for the parts per trillion-level (ppt) precision PFAS demands.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

DRINKING WATER APPLICATION NOTES

  • Optimizing Brine Flow In A Geothermal Power Plant
    1/27/2022

    Different flow meter technologies were used in this geothermal power plant to monitor and measure brine. However, these traditional technologies failed. That’s where Panametrics PT900 Portable Ultrasonic Flowmeter was able to help.

  • FLEX-TEND® Flexible Expansion Joints, Features And Specifications
    12/3/2020

    FLEX-TEND® flexible expansion joints are designed to protect structures and pipelines from differential movement whether this movement is earthquake induced or the gradual motion of soil subsidence. This bulletin offers a concise listing and discussion of the important features and materials of the double and single ball assemblies.

  • Application Note: Ozone Measurement In Potable Water
    3/1/2010

    Ozone is a powerful oxidizing agent that can be used to destroy the organic compounds that affect the taste and odor of potable water. Environmental concerns have led to increased use of ozone because, unlike chlorine, it does not form hazardous by-products.

  • VFD Energy Savings For Pumping Applications
    4/6/2017

    In the early days of variable frequency drive (VFD) technology, the typical application was in process control for manufacturing synthetic fiber, steel bars, and aluminum foil.

  • Ion Exchange Resins And Activated Carbons For Better-Tasting Water
    12/18/2013

    For many, access to good-tasting tap water is limited, and buying bottled water can be expensive. Simple pour-through jug filters offer a low-cost and effective alternative. Activated carbons, in conjunction with ion exchange products, produce drinking water that is absent of all industrial pesticides and contaminants.

  • Reduced Bore Electromagnetic Flowmeter
    10/29/2021

    Being able to accurately measure both the quantity and rate of water passing through a water distribution system is crucial to gain an informed understanding of overall efficiency. As such, achieving a measurement that is exact as possible can have a significant impact on key areas. This includes supply planning, maintenance, resource deployment, leakage detection and the overall environment.

  • Improved Determination Of Volatile Organic Compounds In Water By SPME And GC/MS
    6/21/2018

    The analysis of water for volatile organic compounds is important due to their toxicity. The current methods for this determination lack of sensitivity, selectivity or capability for automation. This paper presents the new ISO 17943 Standard using Solid Phase Microextraction (SPME) and GC/MS. The sample preparation by SPME enables limits of detection and easy automation of the whole method. GC/MS provides the required sensitivity and selectivity. This ISO Standard was validated by an interlaboratory trial, which results confirm the outstanding performance for this method.

  • Simplify And Optimize Your Process With Level And Pump Control
    3/1/2022

    Level controllers have evolved to meet today’s environmental challenges and industry demands. Learn how they support improved process management and, ultimately, a better bottom line.

  • How To Read An Encoder
    9/13/2013

    The HR-E LCD encoder has a 9-digit Liquid Crystal Display (LCD) to show consumption, flow and alarm information. The display automatically toggles between 9-digit and 6-digit consumption, rate of flow and meter model.

  • A New Way Of Designing With Reverse Osmosis Membranes
    7/23/2015

    Process design in water treatment is historically confined to proprietary or user-defined spreadsheets on a unit operation basis, with users manually adding results from each unit process upstream into the next operation.

DRINKING WATER PRODUCTS

SITRANS T temperature measurement devices can be connected to many different thermocouples and resistance thermometers, as well as mV and resistance sensors. The SITRANS T temperature transmitters are available as intrinsically safe, explosion proof and non-sparking versions and also as non-hazardous.

Positioners are essential to the smooth and reliable operation of your process. They play a vital role in ensuring the best possible performance throughout your plant. A great example is our new electropneumatic positioner, the SIPART PS100. Its ease and speed of initialization make it a winner for valve manufacturers, the chemical industry, the energy sector, and many other fields. Special benefits of the SIPART PS100 include robust construction and ease of operation.

Innovative self-cleaning high quality plastic filter for a wide variety of applications.

The Pulsa Series hydraulic diaphragm metering pumps was the foundation upon which Pulsafeeder was built. For over 70 years Pulsa Series hydraulic pumps have been synonymous with dependability, quality and precision engineering, and are still depended upon to provide years, even decades, of year round operation. Available with a variety of diaphragm styles to deliver everything from thin fluids to lime slurries, materials of construction for contact with the most hazardous chemicals and features and options to provide safe, remote and accurate dosing, count on Pulsa Series for the most demanding applications.

At Jacobi Carbons, we take our environmental responsibilities very seriously.  We are the only coconut shell carbon manufacturer with the foresight to have attained ISO 14001, the only globally accepted standard for environmental management. With the commitment of our entire organization we have been able to achieve the delicate balance addressed by the standard of maintaining profitability while reducing environmental impact.

Looking for a Skid Mounted Complete Metering System, but your equipment room is short on space? The New CHEM-FEED CFCS is engineered for small spaces. It features a compact design and small footprint. The skid is constructed of tough, lightweight chemical and UV-resistant polyethylene, and it ships fully assembled with all necessary components for easy install and fast startup.  Wall or Shelf Mount. One or Two Pump Models.

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

The recoating of a potable water tank in Lancaster, PA, included an already tight timeframe and several challenges that cause delays.

Aqua wants you to know the 411 on lead exposure

A group of Congressional Democratic lawmakers from Michigan has proposed legislation to provide $600 million in financial assistance to help Flint deal with its current water crisis.

Bluefield Research analyst, Erin Bonney Casey, presents on water reuse markets in the U.S. during the WateReuse Association's One Water Innovations Press Workshop at WEFTEC 2014 in New Orleans, Louisiana.

Nick Dugan is an environmental engineer working in EPA's Cincinnati laboratory. He is currently focused on bench-scale trials evaluating the impact of common drinking water treatment oxidants on intact, toxin-producing cyanobacterial cells over a range of water quality conditions.

ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.